Rotary toothbrush



B. W. LEACH.

ROTARY TOOTHBRUSH.

APPLlcmon msn Juni so. 1919.

Patented J une 1, 1920.

,nnvrom y .BJh/Leac.

gromnrs.

UNITED BASIL `W. LEACH, OF GOLCONDA, NEVADA.

ROTARY TOOTHBRUSH.

Application filed .Time 30, 1919.

To all whom t may concern:

Be it known that I, BAsiL WV. LnAoH, a citizen of the United States,residing at Golconda, in the county of Humboldt and State of Nevada,have invented 'certain new and useful Improvements in RotaryToothbrushes, of which the following is a specification.

This invention relates to brushes, and more especially to those whichare rotary; and the object of the same is to provide a rotary brushdesigned primarily for scouring the teeth, although of course it couldbe employed for other purposes.

The structure has two handles which are detachable and a brush head andstaff also detachable, and all these elements may be stored within thecasing, and therefore, one object of the invention may be said to be theproduction of a device of this kind whose external parts are housed whenit is out of action.

Another object is to provide means for utilizing the same casing forcontaining tooth paste, etc., so that the whole outfit can be carried ina travelers bag or else- 'where with safety.

Detailed description follows, reference being made to the drawingswherein:

Figure 1 is a perspective view and Fig. 2 a longitudinal section of thisdevice with its parts in position ready for service.

Fig 3 is a plan view with the hood removed, showing the detachable partsas stored within the body.

The casing is made in two parts preferably of light sheet metal such asaluminum, and comprises a body having a base plate 1 surrounded by anupstanding flange 2 and having a screw 3 depending from its center, anda hood 4 of approximately the configuration shown, having slots 5 and 6in its front and rear ends, the hood fitting removably over and aroundthe flange and preferably secured thereto by any suitable means whichwill render it detachable, such as screws 7. A handle 8 has a threadedsocket in its upper end for detachable engagement with the screw 3, andwhen this handle is in place the entire casing and the parts carriedthereby may be supported in the left hand.

A power shaft 10 is journaled in a post 11 rising from the center of thebase plate Specification of Letters Patent. l

Patented J une 1, 1920.

Serial No. 307,533.

and also at 12 is an extension from the rear end iange, beyond whichbearing 12 it has a lsocket 13 into which may be screwed the threadedend 14 of a driving crank l5 which has a handle 16, while the inner endof said shaft 10 has a power gear 17.

A brush head 20 (of which there may be several in the outfit) isdetachably secured in any appropriate manner at 21 to a staff 22, andthe stad:l in turn is detachably inserted into a socket 23 at the outerend of a driven shaft 24. The latter is journaled at 25 in the front endiiange and at 26 in said post near its base, and carries a driven gear27 meshing with the power gear 17.

When the parts are correctly connected up for use they stand as seen inFig. 2. The device is held in the left hand by the handle 8, and thepower shaft 10 is rotated by the right hand which grasps the crank han-Vdle 16, and through the difference in size of the gears 17 and 27, rapidrotation is iinparted to the staff 22 and therefore to the brush head20. The latter is inserted in the mouth and borne against the teeth,although, of course, if this device is used for other purposes theelement 20 whatever its 'character will be borneA against the work.

When the device is to be stored away or transported, the crank handle isunscrewed at 14 from the socket 13, the main handle 8 removed from thescrew 3, the head 20 detached from the staff 22 and the latter removedfrom the socket 23, and all these parts laid upon the base plate 1within its iiange 2, after which the hood 4 is put on as will be clear.The screws or other fastening devices 7 connect the two elements of thecasing, and the slots 5 and 6 permit the hood to be moved verticallywith respect to the sockets 23 and 13.

Having thus described the invention, what is claimed as new is:

A rotary tooth brush including a base plate having upstanding side,front, and rear flanges, a vertical bearing post arranged centrally uponsaid base plate, longitudinally extending vertically spaced parallelshafts having their inner end portions journaled through said bearingpost and their outer end portions journaled through said front and rearflanges, the outer portions of said shafts being formed with sockets,coacting gears mounted on the inner portions of said shafts adjacentsaid bear-- ing posts, a brush having an elongated shank connected tothe socket of one of said shafts, a crank handle detachahly connected tothe socket of the other shaft, and a hood having depending side and endWalls surrounding and detaehably connected to said upstanding flanges ofthe hase and hav! ing slots opening out through the lower edges of theirend Walls and receiving the 10 extended portions of said shafts.

In testimony whereof I aHiX my signature.

BAsIL W. LEACH. [1. 3,]

